Nested tables in user config aren't merged

[yujinyuz]

I have this in my config

  {
    'miversen33/sunglasses.nvim',
    event = 'UIEnter',
    opts = {
      filter_type = 'NOSYNTAX',
      filter_percent = 0.45,
      excluded_filetypes = {
        'gitcommit',
      },
    },
  }

But it seems to override the default config. I tried opening nvim tree without the config and unfocused nvim tree and the nvim tree is still highlighted.

However, after adding that, unfocusing nvim tree now unhighlights it